iJumpusa is a great company. We went to their office in CA and actually looked at a few different sized trampolines because we werent sure of which size to get for our yard. They had a few layed out and assembled in their massive warehouse. From rectangles to round trampolines, who would've ever thought a trampoline company could be so huge. We ended up getting the biggest units which was the 14x16XHD. The Olympus Pro's are very durable heavy duty units. We've owned ours for almost 2 years now and the frame is still holding up strong. My kids are in gymnastics classes so I wanted to make sure we got a quality trampoline. Very responsive jumping mat and allows the kids to do flips and tricks. Very good buy, the customer service at iJUMPUSA is great, the guys there are really friendly.